.flex-container {
  display: flex;
  flex-flow: row wrap;
  justify-content: flex-start;
  padding: 0;
  margin: 0;
  list-style: none;
}

.flex-item {
  /* background: tomato; */
  padding: 5px;
  /* width: 350px;
  height: 250px; */
  /* margin: 10px; */
  /* line-height: 150px;
  color: white;
  font-weight: bold;
  font-size: 3em;
  text-align: center; */
}


.zoomimg-container {
  display: inline-block;
  margin: 20px;
  /* overflow: hidden;            clip the excess when child gets bigger than parent */
}
.zoomimg-container img {
  display: block;
  transition: transform .4s;   /* smoother zoom */
}
.zoomimg-container:hover img {
  transform: scale(1.3);
  transform-origin: 50% 50%;
}